Daniel Stephan Pratt, MD
Not currently accepting new patients
4.981467 average rating from 259 patient reviews
Specialties
Affiliation
Mass General Brigham
Provider Locations
- Boston, MA
- Danvers, MA
Daniel S. Pratt, MD is an Assistant Professor of Medicine at Harvard Medical School, Clinical Director of Liver Transplantation, and Director of the Autoimmune and Cholestatic Liver Center at the Massachusetts General Hospital.
Dr. Pratt received his BA from Bowdoin College and his MD from the Johns Hopkins University School of Medicine. He completed a residency in Internal Medicine and a fellowship in Gastroenterology and Hepatology at the Tufts-New England Medical Center. He served on the faculty of the Tufts University School of Medicine from 1995 until 2004.
Dr. Pratt was the Medical Director of the Liver Transplant Program and Clinical Chief of the Division of Gastroenterology at the Tufts Medical Center. He joined the faculty of the Harvard Medical School and the MGH Gastrointestinal Unit in 2004.
Dr. Pratt's particular area of clinical interest is autoimmune and cholestatic liver disease including autoimmune hepatitis, primary biliary cirrhosis, primary sclerosing cholangitis, and IgG4 associated liver disease. He also does work in cholangiocarcinoma, hepatocellular carcinoma, viral hepatitis, and cirrhosis/endstage liver disease. Dr. Pratt is the head of the PSC Registry at MGH.
Dr. Pratt has written extensively on liver disease and has been the recipient of numerous teaching awards.
Education & Training
- Fellowship: Tufts Medical Center, 1995
- Residency: Tufts Medical Center, Medicine/Gastroenterology, 1992
- Internship: Tufts Medical Center, Medicine/Gastroenterology, 1990
- Medical Education: Johns Hopkins University School of Medicine, 1989
Board Certifications
- Gastroenterology, American Board of Internal Medicine
Languages Spoken
- English
Age Group Treated
- Adults
Patient Feedback
4.981467 average rating from 259 reviews
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I feel lucky to have him as my doctor. He's sharp and I get the feeling he knows what he's doing. Seems to link up the puzzle pieces
2026-08-09
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Completely satisfied with Dr Pratt, very. Informative about treatment modalities, meds etc. Appointment is always timely with minimal waits.
2026-08-09
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Dr. Pratt is one of the best doctors I have ever seen. His staff is also very knowledgeable and caring. I am very thankful for the Care. I get at Mass General.
2026-08-03
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Dr. Pratt is absolutely wonderful in his manner, care and information.
2026-07-30
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Dr. Pratt is great. Very reassuring concerning my health
2026-07-30
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I love Dr. Pratt and his Team. I will be moving out of state in August and will miss the exceptional care I have received.
2026-07-22
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Dr Pratt is the most caring doctor I have ever had. I think he is the most knowledgeable practitioner in Massachusetts General.
2026-07-19
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In my opinion, Dr Pratt is the best doctor I have ever had. He is outstanding in his knowledge of my condition and treatment. He listens carefully and is very personable. I feel I am in the best care possible with him.
2026-07-18
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Dr. Pratt has saved my life. He has kept me from having to have a liver transplant.
2026-07-18
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Dr Pratt is genuinely invested in his work and patients and has a very warm and enthusiastic manner.
2026-07-19
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Excellent bedside manners and listens closely.
2026-07-13
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Dr. Pratt is always courteous and is always willing to listen to your concerns and answer your questions in a manner that you can definitely understand
2026-07-11
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Professional friendly person and very knowledgeable
2026-07-02
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Dr Pratt and staff are the best !
2026-07-02
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Dr. Pratt is the modern day version of the best doctor in country medicine. He is very personable, he's very knowledgeable, he is pleasant, he is totally engaged, he listens. I have nothing but high praise and respect for Dr. Pratt.
2026-07-01
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Excellent
2026-06-23
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Of all my doctors, Dr. Pratt is my favorite! He is thorough and genuinely friendly making my visits comfortable and informative.
2026-06-22
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Dr Pratt is the finest doctor I have ever had. His great strengths are truly listening and meticulous explanation in completely understandable terms! Best doctor I have EVER had! Thank you for having him at MGH!
2026-06-22
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Dr. Pratt has been my provider for almost 25 years. He is always professional and considerate.
2026-06-22
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I don't enjoy the fact that I have PBC but I do enjoy having Dr Pratt as my doctor. He is always attentive and takes time to assess what's going on and talk with me about my care. He is an amazing physician and I really appreciate his ability to help me understand my illness and I really appreciate the work he puts into finding answers to help solve this illness for me and others long term. [redacted] I really wouldn't go anywhere else for my care.
2026-06-23
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Dr. Pratt is simply amazing! I always look forward to meeting with him even when there is the potential to get info that my disease is advancing. I always come armed with questions and he confronts them all directly and with honesty. This year, he also asked me about life in general. My initial response was "Not Good"! [redacted] His compassion and interest in my/our wellbeing made for such a better mindset trip for me. Me, grateful? Absolutely!!! In a way, kinda looking forward to my next follow-up, [redacted]
2026-06-22
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I need to find more GI jokes for Dr. Pratt ?
2026-06-17
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Dr Pratt is that doctor who you feel completely comfortable with. My appointments with him are always on time, thorough and educational for me as a patient. He never dismisses a question I ask which makes me feel confident enough to ask a question. If I were to recommend a GI doctor, it would absolutely be Dr Pratt!
2026-06-16
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Dr Pratt is just The Best !! So knowledgeable, so kind !! One of a kind ! So grateful for his expertise and knowledge! True credit to his profession!
2026-06-14
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Dr. Pratt is amazing and I would have no one else take care of me the way he does.
2026-06-11
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Dr Daniel Pratt is a great Doctor always listening to me and explaining all my tests results.
2026-06-10
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I feel most fortunate having Dr. Pratt as my gastroenterologist. He is smart, caring, competent, compassionate and extremely knowledgeable about my history. Dr. Pratt is simply the absolute best and MGB is fortunate to have him on its staff.
2026-06-08
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He's been consistently caring and professional over many years
2026-06-07
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Excellent
2026-06-10
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Very compassionate doctor. He really cares about his patients
2026-06-04
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Always professional and upbeat
2026-06-04
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Dr. Pratt is absolutely one of the most pleasant and informative providers I have seen. He always listens and gives me the time necessary.
2026-06-04
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If I have a question or concern, Dr. Pratt always responds in a timely manner
2026-06-03
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My experience with Dr. Pratt has always been amazing down to the staff, nurses, receptionists. And for someone like me with anxiety, they are so thorough and understanding that I've had nothing but great experience.
2026-06-03
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Everything was great, always with Dr. Pratt and staff.
2026-05-31
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Dr Pratt is the best doctor, he listens with interest and is kind and caring. The best Dr I have ever had!
2026-05-25
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Dr Pratt has been treating me for a chronic condition for well over 15 years. I always leave appointments with a clear understanding of test results and a feeling of confidence that I am in good hands under his care. He listens to my questions, takes time to respond and always reminds me to phone him for any concerns that may arise between appointment intervals. He cares about the quality of my life. I am grateful that Dr Pratt is my doctor.
2026-05-24
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Dr Dan Pratt is above and beyond the best doctor I have ever had. I have been under his care for over 20 years, and I truly know that my health is in great hands. I only wish other doctors took the time to listen to their patients, as Dr. Pratt does! He is a GEM in his field.
2026-05-18
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Dr. Pratt is one in the million. He listens. He works out exactly my case inside and out. He gives the best advice. He is kind, concerned, and caring. Other doctors should take a lesson from him. He's excellent with all capital letters.
2026-05-20
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His knowledge and experience treating PBC are unmatched. I am thrilled to have him helping to manage this disease with me. He shows genuine respect and caring for me during our interactions. His level of caring from doctors is rare. I am profoundly appreciative and feel extremely fortunate to have Dr. Pratt as my doctor.
2026-05-18
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Dr. Pratt has been my doctor for over 10 years and he is excellent and caring, professional, and is straight up on everything that's going on with my health situation. I would recommend him to everybody. Thank you.
2026-05-14
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Always very detailed in his responses to my questions, very compassionate, extremely knowledgeable, professional in his field.
2026-05-13
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I found that Dr. Pratt took his time and upon entering the exam room he discussed personal items with me before going over test results. He treated me as a whole person and not just a patient. He has a very friendly disposition and takes his time to listen and get to know you in all aspects.
2026-05-11
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Dr. Pratt is incredibly knowledgeable and empathetic. I always feel he has a high regard for my health. Always a delight to see him for my yearly appointment.
2026-05-09
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Best care i could ever imagine
2026-05-09
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Dr. Pratt and his office are great. All the staff are personable and very comprehensive. I have no complaints at all.
2026-05-06
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He is extremely knowledgeable professional and reassuring
2026-05-03
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Dr Pratt is by far the best dr I've ever been seen by. He truly cares about my health.
2026-04-27
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Experience is always thorough, friendly and never rushed. Questions are answered. Test results are evaluated and explained in detail. Overall a great visit.
2026-04-27
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I really appreciate how quickly and professionally they moved you through the system
2026-04-26
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Good visit ??
2026-04-26
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Dr. Pratt is the best doctor I've ever gone to. He takes the time to listen, he makes suggestions, he has conversations, and he's just incredibly caring and kind and lovely. So good on you for having him, and I hope everyone gets a doctor as good as him.
2026-04-23
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A I waited for about 20+ mins in the exam room for him, he explained the nurse had checked the black circle which meant I was a "no show". He showed me that it showed I checked on @ 1:05.
2026-04-20
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This doctor has cared for me a long time and understands how I work. I trust his judgement. Almost as much as my own, but not quite. Thank you so much
2026-04-20
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Dr. Pratt was incredible. Great service very knowledgeable the best.
2026-04-19
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[redacted] Dr. Pratt is an outstanding doctor, who is extremely intelligent, and his care is superb. [redacted]
2026-04-18
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I have been seeing Dr. Pratt for 20+ years. He is professional, kind and an excellent doctor. Because of his care my liver condition remains stable. I look forward to seeing him for my yearly checkup. [redacted] I wouldn't change my relationship with his practice for anything.
2026-04-13
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Very knowledgeable caring person
2026-04-16
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Exceptional
2026-04-13
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Dr. Pratt is a thoughtful, knowledgeable practitioner. I'm very confident in his treatment and the whole team are excellent.
2026-04-08
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I am very blessed to have Dr Daniel Pratt as my physician. He is the best as a doctor and as a good kind human being.
2026-04-05
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Dr. Pratt is an outstanding provider. I am honored to be his patient.
2026-04-05
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Dr. Pratt is the most kind, compassionate and caring Doctor. He literally saved my life. He is one of a kind! [redacted]
2026-04-05
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Dr. Pratt listens. He understands the difficulty of living with my condition. I am a hard patient to have because I don't tolerate medicines and I believe he can help me find the best recourse when problems arise.
2026-04-02
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Dr. Pratt is a very knowledgeable doctor. He takes wonderful care of me. I truly appreciate everything he does for me.
2026-04-01
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Dr. Pratt is amazing! He is thorough and kind and very knowledgeable about his patient's health
2026-03-30
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He and staff are wonderful
2026-03-29
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Dr. Pratt knowledge of my illnesses gives me confidence that I'm getting the best possible care
2026-03-25
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Dr. Pratt has been very informative and shows concern . He spent time explaining and going over test results and I felt heard.
2026-03-22
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Dr Pratt is the best doctor I have. He has saved my life literally! He is absolutely awesome!
2026-03-22
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Yes, Dr. Pratt is a wonderful doctor, very kind, understanding, takes the time, and I am very pleased that I have him as my physician. Thank you very much.
2026-03-18
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A genuinely nice person. Makes a real effort to get to know you.
2026-03-17
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Dr Pratt has an amazing amount of energy and an optimistic attitude that is very reassuring.
2026-03-16
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Dr Pratt is the very best. He listens and works with you; doesn't talk AT you. You are a part of the conversation.
2026-03-15
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Dr Pratt is extremely professional, knowledgeable, concerned, kind, caring and I appreciate having him as my Dr. for many years. He is wonderful and some drs now do not care for their patients the same way!!!!!!
2026-03-09
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Dr. Pratt provided me with excellent consultation and placed a high importance on listening to and answering all of my questions. I am very grateful to have the opportunity to be a patient of Dr Pratt.
2026-03-09
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Dr Pratt is very attentive and always prepared. He is very supportive and willing to listen.
2026-03-04
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Dr. Pratt is an amazing doctor. I'm grateful to have him as part of my medical team.
2026-02-16
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Hello, Dr. Pratt is one of the best doctors I've had and thank goodness for him. And I put all my faith into him and I think he does an amazing job. He's intelligent, kind, has a good bedside manner and he's caring. He listens, he's thoughtful, and I would recommend Dr. Pratt to anyone. Thank you.
2026-02-18
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I've been a patient of Dr. Pratt since 2009 and I am glad I have the best possible care for my disease.
2026-02-16
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Dr. Pratt is amazing, exceptionally knowledgeable and makes me feel very comfortable and taken care of. Very patient centered
2026-02-04
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He is perfect and very responsive to my needs.
2026-01-29
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Dr. Pratt is the most upbeat and wonderful doctor. He is always thorough and caring and I completely trust him. Doesn't get better then that.
2026-01-25
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Dr. Pratt was extremely kind and compassionate. He was willing to talk to me in person despite my being late due to road accidents. He took the time to follow up and answer any questions I had. He knew and researched about my medical needs and provide prompt medical exams to provide answers I needed.
2026-01-25
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Dr. Pratt is the best doctor. He's smart, warm, compassionate, and I've been seeing him for years and I'm so pleased.
2026-01-22
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Dr Pratt always reviews my medical records right before our appointments. He's always thorough, friendly, genuinely concerned and explains everything in detail.
2026-01-18
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Dr Pratt is a wonderful, kind, empathetic, and knowledgeable doctor. He advocates for me, gives support and even reaches out to other providers to help me get the help needed. I would recommend him to anyone who needed care in this particular area. I am so grateful for him as a provider. I wish all providers were as wonderful as him.
2026-01-18
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Open seeing Dr.Pratt for about 8 yrs now and he actually worked with me all along to help me get the medicine I needed to cure my HepC. He's a wonderful man and a wonderful doctor, very caring very personable, love him!
2026-01-12
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Dr. Pratt always shows a lot of empathy and genuine interest in your condition. He clearly does a lot of preparation and comes to meeting very knowledgeable about your history. He builds your confidence up as a patient and is extremely positive building your confidence in your health care status. He even shared personal anectodes as example of what you're experiencing as a patient. He is so upbeat! I've lost three providers to retirement and moving on at the Brigham and he offers stability and help finding a new provider if I can't at the Brigham. I'm very lucky to have Dr Pratt over seeing my care.
2026-01-12
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The entire staff and Dr Pratt provide the best care. Everyone is extremely helpful and knowledgeable and makes you feel part of the solution.
2026-01-11
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Dr. Pratt is amazing, hands down one of the best doctors I have ever seen.
2025-12-22
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My experience couldn't have been better
2025-12-20
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Dr. Pratt and his team are the best. Dr. Pratt always takes the time to answer all my questions and explain things in a way that is easy to understand.
2025-12-16
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Dr. Pratt is an outstanding physician.
2025-12-15
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Dr. Pratt is an excellent physician, great bedside manner, very transparent on everything going on with my care and keeps me in the loop, which I really, really appreciate.
2025-12-16
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Dr. Pratt is a compassionate, caring and he's ?
2025-12-16
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great experience
2025-12-15
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I absolutely love and trust and feel comfortable with this provider! This provider shows TRUE compassion for their patients. I sense it in the way our conversations interact with each other.
2025-12-15
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Very through in explaining test results and listening to my questions
2025-12-07
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Dr. Pratt is very attentive, kind and reassuring. I'm very glad to be working with him.
2025-11-26
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I was very satisfied with my visit with Dr. Pratt. He is extremely thorough and I left feeling good with my visit.
2025-11-23
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Dr Pratt is a wonderful physician- attuned to his patient and wonderfully responsive to his patients.
2025-11-23
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Dr. Pratt takes the time needed to discuss my health concerns and what is needed for the future. He listens to my concerns and we make a plan together.
2025-11-19
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I hit the jack pot with this care provider. Compassionate, very thoughtful. Excellent care. I trust this care provider 100%. Feel I am in the best of care
2025-11-19
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Extremely knowledgeable, and experienced professional with a pleasant and caring personality. I've received wonderful care from him and others in this practice for many years. Would highly recommend!
2025-11-12
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Very professional and answered all my questions.
2025-11-10
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The Doctor, nurse and secretary were excellent
2025-11-12
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Well, this doctor is a professional doctor who has treated me very well and I always see him once a year because he cured me of my illness and he has always treated me very friendly and yes, and he knows what he's doing.
2025-10-22
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Beyond Excellent !!! You are lucky to have Dr. Pratt .. he is one in a Million ....Remembers who you are/ knows your medical background / kind / efficient and beyond SMART ... He's a doctor for the patients !!!
2025-10-19
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Dr.Pratt is the best! He has a very upbeat personality and can always show you the bright side of your condition.
2025-10-19
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I was greeted promptly and politely and checked in very quickly by receptionist. I was also quickly called back by [redacted], a fairly new medical assistant to perform a fibroscan. [redacted] was VERY pleasant and had a wonderful personality. [redacted] I then saw Dr. Pratt, who is amazing. He is extremely personable, reads the chart in advance and makes you feel like he has known you his whole life. He does not make you feel rushed, explains things and answers any and all questions. It is rare to find a doctor like Dr. Pratt anymore and I am fortunate to have found him. I was then personally walked out to the scheduler, [redacted] by Dr. Pratt. [redacted] was also extremely friendly and helpful to me. She made sure all ends were tied up and made sure I understood my instructions. I cannot say enough about my experience at MGH, specifically in the GI department with Dr. Pratt, MA [redacted] and scheduling clerk, [redacted]. It made going to a doctor's appointment pleasant and enjoyable. Thank you!
2025-10-18
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Dr. Pratt is the best
2025-10-13
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De Pratt is very knowledgeable and truly cares about his patients well being. He has always listened and has been very supportive.
2025-10-13
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Dr. Pratt, [redacted] and the entire GI staff are just incredible!
2025-10-11
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Dr. Pratt has improved my life enormously. He's the third doctor I went to for my autoimmune hepatitis, and the one who balanced targeted treatment and quality of life. He knows about my children as well as my liver, and helped connect me with other MGH providers. I feel even more fortunate when I see his name on research and hear him cited at AIHA!
2025-10-08
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Dr Pratt and his administrative assistant, [redacted], are the best! Could not ask for a more thorough, courteous and professional practice!
2025-10-11
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Dr Pratt and his staff are top notch. Very professional on time curious. I think the world of them.
2025-10-07
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I have been Dr. Pratt's patient for over a decade. He knows every detail of my clinical history and is keenly interested in what is going on in my personal life. He is world class in his field and is one of the most compassionate people I've ever known. I feel so fortunate to be in his care.
2025-10-05
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Dr Pratt was patient and kind. He listened to my concerns and answered each one as well as those of my family. He is amazing and I am grateful to have him as my doctor.
2025-10-05
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Dr Pratt is absolutely the best! He has a great patient-doctor communication, listens, answers, actually makes you feel like he really really does care about your case. I would recommend him highly.
2025-10-05
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Very productive
2025-10-05
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Dr Pratt is a very passionate and caring professional who takes the time to thoroughly review and discuss any issues regarding my condition.
2025-09-29
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Dr. Pratt is the most caring and professional physician on the planet. Period. He is compassionate, kind, and extremely knowledgeable and is able to explain things in a way that is on the patient's level. Period. I thank God for Dr. Pratt and for everything he has done for me. Thank you, [redacted]
2025-09-26
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Dr Pratt makes me feel like he is 100% involved with me.
2025-09-22
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Dr Pratt is wonderful doctor. He is wonderful to talk to and he always walks his patients to the receptionist at the end of the appointment. I find him to be a genuinely fabulous doctor.
2025-09-22
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Very compassionate epitomizes what is to be a physician.
2025-09-22
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Dr. Pratt is an exceptional provider. He is very knowledgeable on my health issues.
2025-09-21
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I find him very caring about his patients
2025-09-17
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This provider was kind, listen carefully and looked up information when I had a question relating to other providers. His open personality made Dr Pratt approachable and available to ask questions about a sensitive subject.
2025-09-17
Accepted Insurance
- Tufts Medicare Preferred
- Medicaid CT
- Wellpoint
- Medicaid VT
- Railroad Medicare
- Blue Cross Blue Shield
- Blue Cross Blue Shield - Indemnity
- Senior Whole Health
- WellSense
- WellSense NH
- United Health Care
- Cigna
- Medicaid RI
- Harvard Pilgrim Health Care
- Medicaid NH
- Medicaid ME
- TriCare
- Fallon Health
- Beech Street
- Maine Community Health Options
- Mass General Brigham Health Plan
- Coventry
- Tufts Health Plan
- Blue Cross Blue Shield Medicare
- MassHealth
- Medicare
- Aetna
- Humana
- Commonwealth Care Alliance
- Multiplan